<template>
  <el-container class="home-container">
    <!-- 头部区域 -->
    <el-header>
      <div>
        <!-- <img src="../assets/logo.jpg" alt="" /> -->
        <span>后台管理系统</span>
      </div>
      <el-button type="info" class="logout" @click="logout">退出</el-button>
    </el-header>

    <!-- 页面主体区域 -->
    <el-container>
      <!-- 侧边栏 -->
      <el-aside width="isCollapse ? '6px' : '200px'">
        <div class="toggie-button" @click="toggleCollapse">
          <i :class="isCollapse ? 'el-icon-s-unfold' : 'el-icon-s-fold'"></i>
        </div>
        <el-menu
          background-color="#333744"
          text-color="#fff"
          active-text-color="#409EFF"
          unique-opened
          :collapse="isCollapse"
          :collapse-transition="false"
          router
          :default-active="activePath"
        >
          <!-- 一级菜单 -->
          <el-submenu
            :index="item.id + ''"
            v-for="item in menulist"
            :key="item.id"
          >
            <template slot="title">
              <i :class="iconlist[item.id]"></i>
              <span>{{ item.authName }}</span>
            </template>
            <!-- 二级菜单 -->
            <el-menu-item
              :index="'/' + subItem.path"
              v-for="subItem in item.children"
              :key="subItem.id"
              @click="saveNavState('/' + subItem.path)"
            >
              <template slot="title">
                <i class="el-icon-arrow-right"></i>
                <span>{{ subItem.authName }}</span>
              </template>
            </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>

      <!-- 右侧主体 -->
      <el-main>
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
  data() {
    return {
      menulist: [],
      iconlist: {
        125: "el-icon-user",
        103: "el-icon-setting",
        101: "el-icon-goods",
        102: "el-icon-shopping-cart-full",
        145: "el-icon-s-data",
        160: "el-icon-office-building",
      },
      isCollapse: false,
      activePath: "",
    };
  },
  created() {
    this.getMenuList();
    this.activePath = window.sessionStorage.getItem("activePath");
  },
  methods: {
    logout() {
      window.sessionStorage.clear();
      this.$router.push("/login");
    },
    // 获取所有的菜单
    async getMenuList() {
      const { data: res } = await this.$http.get("menus");
      if (res.meta.status != 200) return this.$message.error(res.meta.msg);
      this.menulist = res.data;
      // console.log(res);
    },
    // 点击菜单的折叠和展开
    toggleCollapse() {
      this.isCollapse = !this.isCollapse;
    },
    // 保存链接的激活状态
    saveNavState(activePath) {
      window.sessionStorage.setItem("activePath", activePath);
      this.activePath = activePath;
    },
  },
};
</script>

<style lang="less">
.home-container {
  height: 100%;
}
.el-header {
  background-color: #373d41;
  color: rgb(245, 244, 244);
  font-size: 20px;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  > div {
    display: flex;
    align-items: center;
    span {
      margin-left: 15px;
    }
    img {
      width: 60px;
      height: 60px;
    }
  }
}

.el-aside {
  background-color: #333744;
  .el-menu {
    border-right: 0;
  }
  .toggie-button {
    background-color: #4a5064;
    text-align: center;
    color: floralwhite;
    cursor: pointer;
  }
}

.el-main {
  background-color: #e9eef3;
}
</style>
